The cesium-131 nuclide has a half-life of 30 years. After 120 years, about 3 g remains. The original mass of the cesium-131 sample is closest to

Q: 2. A sample of iodine-126 with an original mass of 15.00 mg loses 13.125 mg of the original mass of…

A: When the quantity is reduced to one-half of the original of a radioactive sample, then the time…

Q: 3. a)What quantity of energy would be produced as one atom of plutonium-238 undergoes alpha decay?…

A: Since you have posted multiple questions, we will solve only first question for you. If you want the…

Q: Carbon-14 Original amount: 60.0 g Amount left: 3.75 g Total time: Half-life: 5730 y Number of…

A:

Q: A sample of cobalt-60 was labelled as having an activity of 3.25mCi, but upon inspection, it…

A: Co-60 is used medically for radiation therapy as implants and as an external source of radiation…

Q: An example of a fission product is A. cadmium B. boron C. barium D. thorium…

A:

Q: A 1.55 g sample of an isotope has a half-life of 3.8 days. What mass of sample is left after 5.5…

A: given data,sample of an isotope or initial amount of sample =1.55 g sample half life =3.8…

Q: How much energy must be supplied to break a single aluminum-27 nucleus into separated protons and…

A: Mass of Al-27 nucleus = 26.9815386 amu Mass of proton (mp) = 1.00728 amu Mass of neutron (mn) =…

Q: half-life of this isotope?

A: The half –life of Bismuth-218 isotope

Q: An ancient skull has a carbon-14 decay rate of 0.85 disintegration per minute per gram of carbon…

A: It's a nuclear decay reaction. Therefore, it will follow first order kinetics. And since it is…

Q: 1 A radioisotope has a half life of 4 days. How much of a 20-gram sample of this radioisotope…

A:

Q: Number of years Mass of original Carbon 14 remaining (grams) Half-life 1 1/2 5,700 2. 1/4 11.400 1/8…

A: After a half-life period, the mass of the reactant becomes half of the initial mass. So amount…

Q: Carbon -14 has a half-life of 5.730 x 10 3 years.  If the original mass of the parent is 501.695 g,…

A:

Q: The Cs-131 nuclide has a half-life of 30 years. After 120 years, 3.0 g remain. What is the original…

A:

Q: Compare the relative health risks of contact with a given amount of 226Ra, which has a half-life of…

A: In order to solve this question, we will apply the formula for half life and find out the rate…

Q: el The half-life of barium-131 is 12 days. How many grams remains after 60 days if the initial…

A: We have to predict the amount left after certain time.

Q: lead (214Pb82) decays to bismuth (214Bi83) emitting negative beta particles with a half-life of…

A: answer =  1.1846 x 10-11 curie

Q: A sample of technetium-99m with a mass of 4.61 ng will have decayed to how much of this radionuclide…

A:

Q: Mass of cobalt-59 is 58.9331951 amu  Mass of a proton is 1.00783 amu Mass of a neutron is 1.00866…

A: Mass of cobalt-59 is 58.9331951 amu. In 59Co, there are 27 protons and 32 neutrons. Mass of a proton…

Q: A 4.0 g sample of Ra-226 decays to 1.0 g. If the half-life of Ra-226 is 1620 years, how much time…

A: Given initial concentration of Ra-226 = [Ra-226]0 = 4.0 g  Final concentration = [Ra-226] = 1.0 g…

Q: the Cs-131 by life has a half life of 30 years. after 120 years, 2.6 g remain. what is the original…

A:

Q: The half life of bismuth-213 is 46 minutes.  How much of a 20 g sample of bismuth-213 is left after…

A: The unstable nucleus or isotope undergoes radioactive decay to form a stable nucleus. This process…

Q: 26. Four hundred grams of a radioactive substance decays to 50.0 grams. If it has a half-life of…

A:

Q: Calculate the binding energy of an alpha particle

A: Calculate binding energy of alpha particle ?

Q: Consider a certain type of nucleus that has a half-life of 32 min. Calculate the percent of original…

A: Given: The half life, (t1/2)=32 min. The time of disintegration , (t)=1.9 hrs=(1.9*60)=114 min.…

Q: A wooden object from an archeological site is subjected to radiocarbon dating. The activity due to…

A: Given, The half life of 14C is 5715 yr. Activity of 14C is 11.6 disintegration per second Activity…

Q: How much energy is released in the decay of 23892U into 23490Th and an alpha particle? Mass of…

A: Given release energy in alpha decay Mass of 23892U = 238.0508 amu Mass of 23490Th = 234.0426 amu…

Q: 4. The mass of chlorine-37 is 36.96590 amu. Calculate the binding energy per nucleon of chlorine-37.

A: Interpretation - The binding energy per nucleon of chlorine-37 is to be explained.

Q: When atoms of beryllium-9 are bombarded with alpha particles, neutrons are produced. What new…

A: Given:  In the nuclear reaction the reactant  are:  Beryllium and alpha particle. Whiler the product…

Q: After 40.0 days, how much Ac-225 remains if the starting mass was 94.0 g? Ac-225 has a half life of…

A:

Q: Certain radioactive isotope has a half-life of 3.9 minutes. If we initially have 7168 grams of this…

A: According to the question, we have: Half life of radioactive isotope = 3.9 minutes.  Initial mass =…

Q: Ne+ He - Mg + 'n (d) The following fusion reaction occurs in stars: Particle Mass (u) Given the…

A: All types of nuclear reactions are accompanied by either the absorption of energy or release of…

Q: A The half-life of barium-131 is 12 days. How many grams remains after 60 days if the initial sample…

A:

Q: Which one of each pair of nuclides would you expect to have thelonger half-life?a. Cs-149 or Cs-139…

A: The nuclides which have longer-half life has to be given, One can find the stability of the nuclide…

Q: The mass of the atom 23/11 Na is 22.9898 amu.(a) Calculate its binding energy per atom in millions…

A: Given: Notation for Na-11 is  N1123a Mass of sodium = 22.9898 amu Total protons in 23Na = 11 Total…

Q: Complete the following equations with the correct particles and identify the mode of decay. (a) '0→…

A: Given,

Q: how many grams of tritium would you have in 37.5 years?

A:

Q: A sample of cobalt–60 was labelled as having an activity of 3.25 mCi, but upon inspection, it…

A: Given  initial activity of Co-60 = 3.25 mCi final activity of Co-60 = 1.50 x 107 Bq  half life time…

Q: Calcium-47 Original amount: 23.8 g Amount left: Total time: Half-life: 4.5 d Number of half-lives: 7

A: The original amount of chromium-47 is = 23.8 g The Half-life time is = 4.5 d The number of…

Q: The actual mass of a neon-21 nucleus is 20.993845 amu. Given that the mass of proton is 1.007276 amu…

A:

Q: In a 3 X 109 -year-old rock that originally contained some 238U , which has a half-life of 4.5 X 109…

A: Half-life is defined as the time in which the original numbers of nuclei are decayed to half. In the…

Q: The most abundant isotope of uranium-238 which has an isotopic mass of 238.0508 g/mol. What is the…

A: Given that: Mass of Uranium-238 = 238.0508g/mol = 238.0508 amu               (1amu = 1g/mol) Binding…

Q: What is the resulting isotope after the synthesis of alpha with 238U92? Write the complete synthesis…

A: Atoms having same atomic number but different atomic masses are called isotope. For one element…

Q: An ancient skull has a carbon-14 decay rate of 0.85 disintegrations per minute per gram of carbon…

A: An ancient skull has a carbon-14 decay rate of 0.85 disintegrations per minute per gram of carbon…

Q: A student is surprised by her work. She feels that the nuclear binding energy is high for oxygen-16.…

A: Here we have to find the incorrect step of calculation in the following Einstein mass- energy…

Q: Calculate the binding energy per nucleon for lithium-6 (in MeV/nucleon). The mass of a lithium-6…

A: Atom consist nucleons proton and neutron. Binding energy is the amount of energy required to break…

Q: An 80.0 g sample of iodine-131 was placed in a sealed vessel forty days ago. Only 2.5 g of this…

A: Decay reactions are first order reactions. Since we know that the relationship between the amount of…

Q: When will a 1.00 g sample of thorium–232 have a mass of 1.00 mg, knowing that the half – life of…

A:

Q: A small atomic bomb releases energy equivalent to the detonation of 20,000 tons of TNT; a ton of TNT…

A:

Q: In a 3×109 -year-old rock that originally contained some 238U , which has a half-life of 4.5×109…

A: Since 238U has a half-life of 4.5 × 109 y, it is useful for dating only very old materials, showing,…

Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.